| Diagram | GEARBOX SHAFTS AND GEARS |
| Subsystem | gearbox |
| Listed in parts books | Not catalogued by year yet |
Speedometer gear, sidecar (15T)
A 15-tooth speedometer drive gear for sidecar outfits, part of the gearbox drive train that runs the speedo cable.
This is a speedometer drive gear, listed in the parts books as a 15-tooth gear for sidecar outfits. It shows up in the gearbox shafts and gears section, where the speedo drive train picks off rotation from the gearbox to run the speedometer cable up to the instrument head.
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The 15-tooth count is specific to sidecar setups, which typically run different gearing than a solo bike to keep the speedometer reading accurate with a sidecar's effect on rolling behavior and final drive. Our catalog record only shows this one appearance, dated to 1964, so we don't have a wider fitment history on file for it.
If you're chasing speedo accuracy on a sidecar rig and suspect the drive gear is the culprit, this is the kind of part to check tooth count against before ordering. Give us a call and we'll help confirm what you've got.
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